addiction studies vs bailiwick

addiction studies and bailiwick both are nouns.

Word	Noun	Adjective	Verb	Adverb
addiction studies	Yes	No	No	No
bailiwick	Yes	No	No	No

As nouns, bailiwick is a hypernym of addiction studies; that is, bailiwick is a word with a broader meaning than addiction studies:

addiction studies: a formal exploration of addictions from a variety of academic and scientific perspectives: sociological, cultural, psychological, anthropological, and psychoanalytic.
bailiwick: a branch of knowledge

Other hypernyms of addiction studies include discipline, field, field of study, study, subject, subject area, subject field.

addiction studies (noun)	bailiwick (noun)
a formal exploration of addictions from a variety of academic and scientific perspectives: sociological, cultural, psychological, anthropological, and psychoanalytic.	a branch of knowledge
	the area over which a bailiff has jurisdiction